title: Megavoltage irradiation of epithelial tumors of the nasopharynx.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002277:Carcinoma / Q000401:mortality / Q000532:radiotherapy*; D002294:Carcinoma, Squamous Cell / Q000401:mortality / Q000532:radiotherapy*; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009303:Nasopharyngeal Neoplasms / Q000401:mortality / Q000532:radiotherapy*; D011879:Radiotherapy Dosage; D011882:Radiotherapy, High-Energy